Hitachi-DVPF4E-cd-sm 维修电路原理图.pdf

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1、SERVICE MANUALSERVICE MANUALSPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENTSM0411SM04112004Digital Media Division, TokaiAprilDO NOT RESELL OR DIVERT IMPROPERLY.DO NOT RESELL OR DIVERT IMPROPERLY.DVD PLAYER & VIDEO CASSETTE RECORDERDVD PLAYER & VIDEO CASSETTE RECORDERPALDV-PF4E(UK)DV-P

2、F4E(UK)RadioFans.CN 收音机爱 好者资料库CONTENTS1 CAUTIONS FOR SAFETY IN PERFORMING REPAIR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11-1 LASER BEAM SAFETY PRECAUTIONS . . . . . . . 1-11-2 IMPORTANT SAFETY PRECAUTIONS . . . . . . . . 1-21-2-1 Product Safety Notice . . . . . . . . . . . . .

3、 . . . . . . . 1-21-2-2 Precautions during Servicing . . . . . . . . . . . . . . 1-21-2-3 Safety Check after Servicing. . . . . . . . . . . . . . . 1-31-3 STANDARD NOTES FOR SERVICING. . . . . . . . . 1-41-3-1 Circuit Board Indications . . . . . . . . . . . . . . . . . . 1-41-3-2 Instructions for Co

4、nnectors . . . . . . . . . . . . . . . . 1-41-3-3 Pb (Lead) Free Solder. . . . . . . . . . . . . . . . . . . . 1-41-3-4 Instructions for Handling Semi-conductors . . . . 1-42 GENERAL INFORMATION . . . . . . . . . . . . . . . 2-12-1 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

5、2-2 COMPARISON OF MODELS. . . . . . . . . . . . . . . . . 2-22-2-1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22-2-2 VCR Section . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22-2-3 DVD Section . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32-3 COMPAR

6、ISON OF MAIN CONTROL ICS. . . . . . . 2-42-4 LIST OF ABBREVIATIONS AND TERMS FOR DVD PLAYER . . . . . . . . . . . . . . . . . . . . . . . . 2-52-5 FUNCTION INDICATOR SYMBOLS . . . . . . . . . . . 2-62-6 OPERATING CONTROLS AND FUNCTIONS. . . . 2-73 MAINTENANCE AND INSPECTION. . . . . . . . 3-13-1 TRO

7、UBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . 3-13-1-1 Power Supply Section . . . . . . . . . . . . . . . . . . . . 3-13-1-2 DVD Section . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-43-1-3 VCR Section . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-83-2 FIRMWARE RENEWAL

8、MODE. . . . . . . . . . . . . . 3-153-2-1 How to Update the Firmware Version . . . . . . . 3-153-2-2 How to Verify the Firmware Version . . . . . . . . 3-163-3 STANDARD MAINTENANCE. . . . . . . . . . . . . . . . 3-173-3-1 Service Schedule of Components. . . . . . . . . . 3-173-3-2 Cleaning . . . . .

9、 . . . . . . . . . . . . . . . . . . . . . . . . 3-184 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . 4-14-1 CABINET DISASSEMBLY INSTRUCTIONS . . . . . 4-14-1-1 Disassembly Flowchart . . . . . . . . . . . . . . . . . . . 4-14-1-2 Disassembly Method. . . . . . . . . . . . . . . . . . . .

10、 . 4-14-2 DISASSEMBLY/ASSEMBLY PROCEDURES OF DECK MECHANISM . . . . . . . . . . . . . . . . . . . . 4-64-3 ALIGNMENT PROCEDURES OF MECHANISM. 4-155 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . 5-15-1 PREPARATION FOR SERVICING. . . . . . . . . . . . . 5-15-1-1 How to Enter the Service M

11、ode. . . . . . . . . . . . . 5-15-2 FIXTURE AND TAPE FOR ADJUSTMENT. . . . . . 5-25-2-1 How To Use The Fixtures And Tape . . . . . . . . . 5-25-3 ELECTRICAL ADJUSTMENT INSTRUCTIONS . . 5-35-3-1 Test Equipment Required . . . . . . . . . . . . . . . . . 5-35-3-2 Head Switching Position Adjustment. . .

12、 . . . . . . 5-35-4 MECHANICAL ALIGNMENT PROCEDURES. . . . 5-45-4-1 Service Information . . . . . . . . . . . . . . . . . . . . . . 5-45-4-2 Tape Interchangeability Alignment . . . . . . . . . . 5-51-A. Preliminary/Final Checking andAlignment of Tape Path . . . . . . . . . . . . . . . . . . . 5-61-B

13、. X Value Alignment. . . . . . . . . . . . . . . . . . . . . . . 5-61-C. Checking/Adjustment of Envelope Waveform . . 5-71-D. Azimuth Alignment ofAudio/Control/Erase Head. . . . . . . . . . . . . . . . . 5-86 EXPLODEDS VIEWS AND PARTS LIST . . . . 6-16-1 EXPLODED VIEWS. . . . . . . . . . . . . . . .

14、 . . . . . . . . 6-16-1-1 Cabinet Section. . . . . . . . . . . . . . . . . . . . . . . . . 6-16-1-2 Deck Mechanism View 1 Section . . . . . . . . . . . 6-26-1-3 Deck Mechanism View 2 Section . . . . . . . . . . . 6-26-1-4 Deck Mechanism View 3 Section . . . . . . . . . . . 6-36-2 REPLACEMENT PARTS L

15、IST. . . . . . . . . . . . . . . . 6-46-2-1 Mechanical Parts List . . . . . . . . . . . . . . . . . . . . 6-46-2-2 Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . 6-67 APPENDIX. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17-1 SYSTEM CONTROL TIMING CHARTS . . . . . . .

16、. 7-17-2 IC PIN FUNCTION DESCRIPTIONS. . . . . . . . . . . 7-77-3 LEAD IDENTIFICATIONS . . . . . . . . . . . . . . . . . . 7-10S SCHEMATIC, WIRING DIAGRAMSS-1 Schematic Diagrams/CBAs and Test Points . . . . . S-1S-2 Wiring Diagrams . . . . . . . . . . . . . S-3S-3 Wiring Diagrams . . . . . . . . . .

17、 . . . S-4S-4 Main 1/9 Schematic Diagram. . . . . . . . . . . . . . . . . S-5S-5 Main 2/9, Sensor & Power SW Schematic Diagrams . . . . . . . . . . . . . . . . . . . . . . . S-6S-6 Main 3/9 Schematic Diagram. . . . . . . . . . . . . . . . . S-7S-7 Main 4/9 Schematic Diagram. . . . . . . . . . . . .

18、. . . . S-8S-8 Main 5/9 Schematic Diagram. . . . . . . . . . . . . . . . . S-9S-9 Main 6/9 Schematic Diagram. . . . . . . . . . . . . . . . S-10S-10Main 7/9 & DVD Open/Close Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . S-11S-11Main 8/9 Schematic Diagram. . . . . . . . . . . . . .

19、. . S-12S-12Main 9/9 Schematic Diagram. . . . . . . . . . . . . . . . S-13S-13Power Supply & Junction Schematic Diagrams . . S-14S-14Jack-A Schematic Diagram . . . . . . . . . . . . . . . . . S-15S-15AFV Schematic Diagram . . . . . . . . . . . . . . . . . . . S-16S-16DVD Main 1/3 Schematic Diagram.

20、. . . . . . . . . . . S-17S-17DVD Main 2/3 Schematic Diagram. . . . . . . . . . . . S-18S-18IC101 Voltage Chart. . . . . . . . . . . . . . . . . . . . . . . S-19S-19DVD Main 3/3 Schematic Diagram. . . . . . . . . . . . S-20S-20Waveforms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-21

21、C CIRCUIT BOARD DIAGRAMSC-1 Main CBA Top View & Sensor CBA Top View . . . . C-1C-2 Main CBA Bottom View . . . . . . . . . . . . . . . . . . . . . C-2C-3 Power SW CBA Top/Bottom View & DVD Open/Close CBA Top/Bottom View . . . . . . . . C-3C-4 Power Supply CBA Top/Bottom View & Junction CBA Top/Bottom

22、 View . . . . . . . . . . . . . . . C-4C-5 Jack-A CBA Top/Bottom View & AFV CBA Top/Bottom View . . . . . . . . . . . . . . . . . . C-5B BLOCK DIAGRAMSB-1 Servo/System Control Block Diagram . . . . . . . . . . B-1B-2 Video Block Diagram . . . . . . . . . . . . . . . . . . . . . . . B-2B-3 Audio Bloc

23、k Diagram . . . . . . . . . . . . . . . . . . . . . . . B-3B-4 Hi-Fi Audio Block Diagram. . . . . . . . . . . . . . . . . . . B-4B-5 Power Supply Block Diagram. . . . . . . . . . . . . . . . . B-5B-6 DVD System Control/Servo Block Diagram . . . . . . B-6B-7 Digital Signal Process Block Diagram . . .

24、 . . . . . . . B-7B-8 DVD Video / Audio Block Diagram. . . . . . . . . . . . . B-8RadioFans.CN 收音机爱 好者资料库1-1Drive Mecha AssemblyLaser Beam RadiationLaser PickupTurntable1-1 LASER BEAM SAFETY PRECAUTIONSThis DVD player uses a pickup that emits a laser beam.The laser beam is emitted from the location

25、shown in the figure. When checking the laser diode, be sure tokeep your eyes at least 30cm away from the pickup lens when the diode is turned on. Do not look directly at thelaser beam.Caution: Use of controls and adjustments, or doing procedures other than those specified herein, may result inhazard

26、ous radiation exposure.Do not look directly at the laser beam comingfrom the pickup or allow it to strike againstyour skin.CAUTION FOR SAFETY IN PERFORMING REPAIR11-21-2 IMPORTANT SAFETY PRECAUTIONS1-2-1 Product Safety NoticeSome electrical and mechanical parts have specialsafety-related characteris

27、tics which are often not evi-dent from visual inspection, nor can the protectionthey give necessarily be obtained by replacing themwith components rated for higher voltage, wattage,etc. Parts that have special safety characteristics areidentified by a ! on schematics and in parts lists.Use of a subs

28、titute replacement that does not havethe same safety characteristics as the recommendedreplacement part might create shock, fire, and/orother hazards. The Products Safety is under reviewcontinuously and new instructions are issued when-ever appropriate. Prior to shipment from the factory,our product

29、s are carefully inspected to confirm withthe recognized product safety and electrical codes ofthe countries in which they are to be sold. However, inorder to maintain such compliance, it is equally impor-tant to implement the following precautions when aset is being serviced.1-2-2 Precautions during

30、 ServicingA. Parts identified by the ! symbol are critical forsafety. Replace only with part number specified.B. In addition to safety, other parts and assembliesare specified for conformance with regulationsapplying to spurious radiation. These must also bereplaced only with specified replacements.

31、Examples: RF converters, RF cables, noise block-ing capacitors, and noise blocking filters, etc.C. Use specified internal wiring. Note especially:1)Wires covered with PVC tubing2)Double insulated wires3)High voltage leadsD. Use specified insulating materials for hazardouslive parts. Note especially:

32、1)Insulation tape2)PVC tubing 3)Spacers4)Insulators for transistorsE. When replacing AC primary side components(transformers, power cord, etc.), wrap ends ofwires securely about the terminals before solder-ing.F. Observe that the wires do not contact heat produc-ing parts (heatsinks, oxide metal fil

33、m resistors, fus-ible resistors, etc.).G. Check that replaced wires do not contact sharpedges or pointed parts.H. When a power cord has been replaced, check that5 - 6 kg of force in any direction will not loosen it.I.Also check areas surrounding repaired locations.J. Be careful that foreign objects

34、(screws, solderdroplets, etc.) do not remain inside the set.K. Crimp type wire connectorThe power transformer uses crimp type connec-tors which connect the power cord and the primaryside of the transformer. When replacing the trans-former, follow these steps carefully and preciselyto prevent shock h

35、azards.Replacement procedure1)Remove the old connector by cutting the wires ata point close to the connector.Important: Do not re-use a connector. (Discardit.)2)Strip about 15 mm of the insulation from the endsof the wires. If the wires are stranded, twist thestrands to avoid frayed conductors.3)Ali

36、gn the lengths of the wires to be connected.Insert the wires fully into the connector.4)Use a crimping tool to crimp the metal sleeve atits center. Be sure to crimp fully to the completeclosure of the tool.L. When connecting or disconnecting the internalconnectors, first, disconnect the AC plug from

37、 theAC outlet.1-3AC Voltmeter(High Impedance)Exposed Accessible PartBOne side ofPower Cord Plug ProngsZChassis or Secondary ConductorddPrimary Circuit Terminals1-2-3 Safety Check after ServicingExamine the area surrounding the repaired locationfor damage or deterioration. Observe that screws,parts,

38、and wires have been returned to their originalpositions. Afterwards, do the following tests and con-firm the specified values to verify compliance withsafety standards.1. Clearance DistanceWhen replacing primary circuit components, confirmspecified clearance distance (d) and (d) between sol-dered te

39、rminals, and between terminals and sur-rounding metallic parts. (See Fig. 1-2-1)Table 1-2-1 : Ratings for selected areaNote: This table is unofficial and for reference only. Be sure to confirm the precise values.2. Leakage Current TestConfirm the specified (or lower) leakage currentbetween B (earth

40、ground, power cord plug prongs)and externally exposed accessible parts (RF termi-nals, antenna terminals, video and audio input andoutput terminals, microphone jacks, earphone jacks,etc.) is lower than or equal to the specified value in thetable below. Measuring Method (Power ON) :Insert load Z betw

41、een B (earth ground, power cordplug prongs) and exposed accessible parts. Use anAC voltmeter to measure across the terminals of loadZ. See Fig. 1-2-2 and the following table.AC Line VoltageClearance Distance (d), (d)220 to 240 V 3 mm(d) 6 mm(d)Table 1-2-2: Leakage current ratings for selected areasN

42、ote: This table is unofficial and for reference only. Be sure to confirm the precise values.AC Line VoltageLoad ZLeakage Current (i)One side of power cord plugprongs (B) to:220 to 240 V2k RES. Connected in paralleli0.7mA AC Peaki2mA DCRF orAntenna terminals50k RES. Connected in paralleli0.7mA AC Pea

43、ki2mA DCA/V Input, OutputFig. 1-2-1Fig. 1-2-21-41-3 STANDARD NOTES FOR SERVICING1-3-1 Circuit Board Indications1. The output pin of the 3 pin Regulator ICs is indi-cated as shown.2. For other ICs, pin 1 and every fifth pin are indi-cated as shown.3. The 1st pin of every male connector is indicated a

44、sshown.1-3-2 Instructions for Connectors1. When you connect or disconnect the FFC (FlexibleFoil Connector) cable, be sure to first disconnectthe AC cord.2. FFC (Flexible Foil Connector) cable should beinserted parallel into the connector, not at anangle.1-3-3 Pb (Lead) Free SolderWhen soldering, be

45、sure to use the Pb free solder.1-3-4 Instructions for Handling Semi-conductorsElectrostatic breakdown of the semi-conductors mayoccur due to a potential difference caused by electro-static charge during unpacking or repair work.1. Ground for Human BodyBe sure to wear a grounding band (1M) that is pr

46、op-erly grounded to remove any static electricity that maybe charged on the body.2. Ground for Workbench(1)Be sure to place a conductive sheet or copperplate with proper grounding (1M) on the work-bench or other surface, where the semi-conduc-tors are to be placed. Because the static electricitychar

47、ge on clothing will not escape through thebody grounding band, be careful to avoid contact-ing semi-conductors with your clothing.Top ViewOutInBottom ViewInput510Pin 1Pin 1FFC CableConnectorCBA* Be careful to avoid a short circuit.CBACBAGrounding BandConductive Sheet orCopper Plate1M1M2-12-1 SPECIFI

48、CATIONSITEMDESCRIPTIONVideo sectionTV systemPAL Video headRotating 4 headsRecording systemRotating 2 head helical scan brightness signal FM method VHS standard for methods to directly record color signal low frequency conversionsAudio trackHi-Fi audio track: 2 channel Normal audio track: 1 channelTa

49、pe VHS-type videocassetteTape speedSP: 23.39 mm/s LP: 11.70 mm/sMaximum record and playback timeSP: 4 hours (with E-240 used)LP: 8 hours (with E-240 used)Receiving channelCH IndicationTV Channel01-10TRA-IRJ, GAP21-69E21-E6974-78X.Y.Z.Z+1.Z+288-99, 100S1-S20, GAP121-141S21-S41Reception systemUp-heter

50、odyneRF converterRF CONVERTERConverter outputUHF 22 - 69 ch, I: 35 chTimer display24-hour systemVideo output impedance75 Video output level1.0 V P-PAudio output level-6 dB 1 k unbalance (high impedance)Video input level0.5-2.0 V P-PAudio input level-10 dBVVideo S/N ratio40 dB or moreAudio S/N ratio3